1: A vehicle used for air travel

2: a sexual position that requires male genitalia to pierce female genitalia whilst the male spins (while maintaining the position) in 360 degrees or more

A flying object that can fly vertically and horizontally

Feeling of your head spinning, especially when trying to sleep after a night of heavy drinking.

The only gender

1. To be totally wasted and losing the ability to communicate with the outside world.

2. Those dark silhouettes casted in the blue sky, hovering above drug plantations.

(v) to watch over someone, typically younger or weaker, with intense focus, as if they were a helicopter flying above them.

This mostly refers to parents who pay extremely close attention to their child, to the point where it's invasive on said child's life.